cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A226106 G.f.: exp( Sum_{n>=1} A068963(n)*x^n/n ) where A068963(n) = Sum_{d|n} phi(d^3).

Table of values

n a(n)
0 1
1 1
2 3
3 9
4 20
5 52
6 105
7 253
8 536
9 1142
10 2421
11 4999
12 10278
13 20686
14 41512
15 81984
16 161029
17 312681
18 603070
19 1153284
20 2189331
21 4129537
22 7733317
23 14399693
24 26644337
25 49034811
26 89741600
27 163411148
28 296074694
29 533909026
30 958416113
31 1712893825
32 3048468607
33 5403248469
34 9539609984

List of values

[1, 1, 3, 9, 20, 52, 105, 253, 536, 1142, 2421, 4999, 10278, 20686, 41512, 81984, 161029, 312681, 603070, 1153284, 2189331, 4129537, 7733317, 14399693, 26644337, 49034811, 89741600, 163411148, 296074694, 533909026, 958416113, 1712893825, 3048468607, 5403248469, 9539609984]